Trolley frog and approach end



5. s. STQEE" I May 7, 1940.

TROLLEY FROG AND APPROACH END Filed April 1, 1938 Mama/111 ATTORNEY Patented May 7, 1940 PATENTF OFFICE TROLLEY FROG AND APPROACH END Samuel S. Stolp, Louisville, Ky., assignor to Cheatham Electric Switching Device 60., In-

corporated, Louisvill Kentucky e, Ky., a corporation, of

Application April 1, 1938, Serial No. 199,347'

8 Claims. (Cl. 191-38) economical to manufacture, efiective in operation and economical to service. Another object of my invention, of much importance, resides in providing a readily removable approach member which provides protection for the associated trolley Wire at the beginning and throughout a long period of service.

Another object of my invention is to provide a trolley-conductor device which comprises only 7 one member as an approach end, which member may be readily assembled in operative position by simple tools such as a monkey-wrench and hammer.

A further object of my invention is to provide a trolley-conductor device which shall have a body member and an approach member so cooperatively formed and related as to permit the approach member to be sheared into operative position by a simple rotative movement.

A still further object of my invention is to provide a trolley-conductor. device which shallhave a body member and a removable approach memher so cooperatively formed and related that when attached, and secured in operating position the trolley-conductor functions to retain body and approach member aligned in operating position.

Another important object of my invention resides in providing a new structure for both the body and the approach end which enables the assembled unit, when installed, to render service for a vastly increased period of time at a reduced adding appreciable weight.

In practicing my invention, I provide a unitary removable approach member for a frog, or other trolley-conductor device to take up the shocks and wear incident to the passage of trolley contact members, such as shoes or wheels, in which the frog and the approach-end member are Iormed'and relatedto permit them to'be cooperatively engaged without the. aid of any other holding member and which, when the approach member is once placed in proper position will not lose its adjustment so long as the trolley-conductor is in its operating position.

Figure 1 of the accompanying drawing is a top plan view representing a portion of a frog cost of production and installation and without or other trolley-conductor device sometimes referred to hereinafter as a body, an approachend member and a section of a trolley-conductor embodying my invention. Figure 2 is an elevational sectional viewof the device as shown in Figure 1.

Figure 3 is a bottom plan view of Figure 1. Figure 4 is an elevational view in section along the line 4, 4 of Figure 1, drawn on an enlarged scale. Figure 5 is a sectional elevational view along the line 5, 5 of Figure 1, drawn on an'enlarged scale.

' Figure 6 is a sectional view in elevation on the line 6, 6 of Figure 1, drawn on an enlarged scale. -1

Figure 7 is an elevation of the approach-end member before assembling and peened to secure the trolley-conductor therein,

Referring to the drawing, I have shown a frog having a body member Ill, provided with a channel or passage I2 for the reception of a trolleyconductor I3. The body member is provided with lug I4 in which a horizontally disposed hole I5 has been bored and in which capscrew I6 is lodged. It should be .noted that this screw is 25 equipped with a head I I extending only upwardly from the body and that the threads I8 of this cap screw mesh with the internal threads IQ of ap-- preach-end member 26 which has been screwed into operating position by its having been rotated 30 similar to an ordinary nut.

To statethis structure in other words, the. approach-end member can bejregarded as the nut formed for being screwed on to the cap screw to form a bolt and that said nut has been 35 fashioned so as to provide a contactor surface for engagement with the groove of the trolley wheel on its lower side while the upper side of said nut has been provided with a channel II for receiving trolley conductor I3. By referring to Figure 5, it will be noted that the'approach-end, which is made of brass or a similar metal, presents flat sides; although not exactly parallel, they provide adequate means for engagement with the jaws of a pipe or mon- 45 key-wrench, so that the approach-end can be forcibly rotated as its vertical end surface engages the juxtaposed end of the body so as to efiect alignment of the conductor channels of each member. 50

As the approach-end 20 is screwed into place, face 2| thereof finally engages the juxtaposed or related face 22 of the body member. At this stage, application of a relatively heavy rotary force applied to approach-end, results in shearing brass fragments from face 2! since face 22 of the body member has been machined and thereby presents sharp edges which effectively cut brass face 2!. This shearing results in a very rigid assembly by reason of the strong cap screw I5 and a perfect contact of the faces having been made.

that since the conductor is positively held in the continuous groove the contactor-end is now definitely locked against rotation. It should also be noted that by placing the securing screw l6 substantially parallel to the runner surface, or parallel to the axis of the straight line trolley conductor before a section is deflected by mounting in the frog, a relatively great amount of metal is provided between the screw and the runner surface to withstand electrical and mechanical erosion; Obviously,- this feature greatly extends the life of the contactor-end and the frog, or the trolley-conductor;

like.

While I have shown and described a particular .form of my invention, I desire it to be understood that changes may be eliected thereon without departing from its spirit and scope as set forth in the appended claims.

I claim as my invention:

1. A trolley-conductor device comprising a body member having a channel adapted to receivea an approach-end member having a channel angularly disposed and adapted to receive and deflect said trolley-conductor, and a screw disposed substantially parallel to the axis of. said conductor before being deflected in said device, said screw engaging and uniting said members.

2. A trolley-conductor device comprising a body member having a channel, a trolley-conductor mounted therein, said member being provided with a hole for mounting a screw, said hole being disposed substantially parallel to the axis of said conductor before being deflected in said device, and an approach member having a channel angularly disposed and adapted to receive and deflect said trolley conductor, one end of said approach :member being provided with means cooperating with said screw for uniting said members.

3. A trolley-conductor device comprising a body member having a channel, a trolley-conductor mounted therein, said member being provided down in said channel.

with means mounting a screw disposed substantially parallel to the axis of. said conductor before being deflected in said device, and an approach member having a channel angularly disposed and adapted to receive and deflect said trolley conductor, one end of said approach member being with means mounting a screw disposed substantially parallel to the axis of said conductor before being deflected in said device, and an approach member having a channel angularly disposed and adapted to receive and deflect said trolley-conductor, one end of said approach member being provided with a threaded hole disposed substantially parallel to said axis for receiving said screw and thereby uniting said members.

r 5. A trolley-conductor device comprising a body member having a channel adapted to receive a. trolley' conductor; an approach-end member having a channel in its upper side adapted to receive said trolley conductor, and a bolt disposed longitudinally of said approachend engaging and uniting said members. I 6. A trolley-conductor device comprising a body. member having means to receive a trolley conductor and an approach-end member having.

means to secure said trolley conductor thereto; a runner surface extending over both of said members adapted for engagement with a trolley collector; and a screw disposed substantially parsaid members.

35 I allel to said runner surface engaging and uniting '7. A trolley-conductor device comprising a body member having means to receive a trolley con-1 ductor; an approach-end member detachably se-;

cured to said member; said end member having integral means encircling and retaining said trolley conductor; each of said members having a runner surface aligned one with the other for engagement with a trolley collector; and a meansv disposed between the aligned surfaces and said conductor engaging and uniting said members.

8. A trolley conductor device comprising a body member having a channel adapted to receivea' trolley conductor; an approach member having a channel coextensive therewith and adapted to receive said trolley conductor; an outer surface extending over both of said members and adapted for engagement with trolley collector; and

means disposed between said surface and said chanel substantially parallel to said surfacefengaging anduniting said members, said approach member having means for holding the conductor SAMUEL s. s'roL 

